Machine for preparing road paving and surfacing material.



C. R. HUNT.

MACHINE FOR PREPARING ROAD PAVING AND SUREACING MATERIAL.

APPLICATIGN FILED DEC. 26. l 9|6- RENEWED MAY l4. I918.

[NVEN TO A TTORN/i Y Patented Sept. 10, 1918.

3 SHEETSSHEET 1 IV/ 7 .V/iSS C. R. HUNT.

MACHINE FOR PREPARING ROAD PAVINGAND SURFACING MATERIAL.

APPLICATION FILED DEC-26,1916.'RENEWED MAY I4. 1918.

1,278,662, Patented Sept. 10, 1918.

3 SHEETSSHEET 2- lV/TNESS C. R. HUNT.

MACHINE FOR PREPARING ROAD PAVING AND SURFACING MATERIAL.

APPLICATION FILED DEC.26, 191s. RENEWED MAY 14.19xs.

1 ,278,662. I Patented Sept. 10, 1918.

3 SHEETSSHEET 3- WITNESS QQ [NVEN T0- A TTOR Vk Y a carton.

CALVERT R. HUNT, OF OSCEOLA, MISSOURI.

Specification of Letters Patent.

Patented Sept. 1c, 1918.

Application filed December 26, 1916, Serial No. 139,026. Renewed May 14,1918. Serial No. 235,212.

T 0 all whom it may concern:

Be it known that I, CALVERT R. HUNT, a

citizen of the United States, residing at ()smately, uniformly andeconomically mixedwith a predetermined quantity of any binder,preferably asphaltum, to form a homogeneous mass impervious to Water andhaving tough and tenacious properties, and by which the product shall bedischarged in a stream.

Another object is to produce a machine of the character outlined bywhich the pro- ,portions of the various materials to be incorporated inand constitute the paving or surfacing product may be accuratelydetermined so that the variation in the earthy or granular materials andin their condition may be compensated for by variations in the quantityof binder to be mixed therewith.

A further object is to produce a machine which is self'contained andwhich is of simple, compact, and comparatively inexpensive construction.

VVith these general objects in view and others as hereinafter appear,the invention consists in a novel combination of parts as hereinafterdescribed and pointed out in the appended claims, and in order that itmay be fully and, clearly understood, refer ence is to be had to theaccompanying drawings, in which Figure 1, is a side elevation of amachine embodying the invention.

Fig. 2, is a top plan view of the machine.

Fig. 3, is a rear view of the machine and also of a portable'wagon forsupplying a liquid-binder to the machine.

In the said drawings, 1 indicates the front wheels mounted on a pivotedaxle 2, and 3 the rear wheels mounted on an axle 4, and mounted on saidaxles in any convenient manner is the skeleton bed or frame 5 of the Imachine. Mounted on the front end of said bed is an engine 6 and a tank7 for supplying fuel for the engine, a drive pulley 8 being mounted onthe shaft of the engine and connected by a belt 9 to a pulley 10 mountedon a counter shaft 11, which shaft preferably extends transversely ofthe bed and is journaled in suitable bearing'standards 12. Thecountershaft is equipped with a series of pulleys 13, 14, '15 and 16 fortheir upper ends by a cross member 18. 19

is a vertical shaft journaled at its lower end in a step bearing 20 andat its upper end in the cross member 18 centrally between the sides 17,the shaft being preferably inclosed within a housing 21. Secured rigidlyon the shaft 19 is a shallow circular pan 22, and to rotate the shaftand pan, the former is equipped at its i1pper end with a large mitergear 23 meshing with a drive inion 21 rigidly mounted on a shaft 25journaled on the cross member 18. The shaft 25 is equipped with a pulley26 connected by a belt 27 with the drive pulley 13 on the countershaft11, pulley 26 being thrown in and out of service with shaft 25 throughthe medium of a suitable clutch 28 operated by a lever 29. I

30 is a pair of transverse shafts arranged diametrically of and abovethe pan and journaled at their outer ends in sides 17 and at their innerends in the housing 21, and

.adjustably secured on said shafts in any.

suitable manner is a pair of circular mullers or grinding wheels 31, thesame extending into the pan and adapted to be turned through frictionalcontact with the earthy or other material in the pan under the rotationof the latter.

32 is a pair of cross bars secured to the sides of the frame andextending above the pan 22 and mounted adjustably upon said crossbars'is a pair of scrapers 33, said scrapers extending down into the panand being set at'proper angles to deflect the material in the pan towardthe center of the Y a bucket 42. Into this bucket the material latter sothat all of such material shall be subjected to the grinding andkneading action of the mullers. I

34 is a scoop or shovel provided with a handle 35 extending beyond therim of the machine, said handle extending slidingly through a bracket 36mounted on one of the cross bars 32. The handle is capable of rotationin the bracket and the latter is swiveled so that by applying pressureon the outer end of the handle the scoop or -38 upon which is mounted aroller or trolley wheel 39, and suspended from said roller or trolleywheel by a rod 40 is a measuring device in the form of a weighing scale41, and

is shoveled so that it may be weighed or measured preliminary todepositing it in the pan, the bucket being suitably suspended from thescale so that it is capable of being tilted. A weighing bucket of thecharacter described is not novel per se and is not detailed. v

The track is provided so that the weighing bucket may be run back fromthe machine where it may be conveniently charged. If the track is ofsuch length that it cannot be properly and conveniently braced from themachine, it is desirable to provide a ground support at its rear end,this support being shown as a vertical standard or frame 43 resting onthe ground and detachably bolted or otherwise secured to the rear end ofthe track. l/Vhen the bucket is loaded it is run to the front end of thetrack and tilted forwardly so that its contents .shall be dischargedinto the pan. v

For supplying the pan with the binder in proper proportion to the amountof earthy or granular material dumped into the pan, a measuring devicein the form of a weighing scale is suspended from a lateral extension 44of frame 37 (see Fig. 3) said scale comprising a suspension rod 45, ascale beam 46, an adjustable weight 47 at one side of the fulcrum pointof the scale beam and a weighing cup 48 suitably attached to a rod 49suspended from the scale beam at the opposite side of the 'fulcrum pointthereof. There is nothing specifically new in this weighing scale andthe same is therefore not detailed. It is charged with the binder by anysuitable means, and I have illustrated a hand pump herein as such means,this pump, numbered 50 is mounted on the bed of the machine and isequipped with a hose 51 for detachable connection with a tank 52, thistank preferably constituting a part of a wagon as shown, as it willusually be found more convenient to convey the binder to the machinethan to equip the latter with a large reservoir.

If a liquid binder is used, it will be pumped into the cup 48 and dumpedinto the pan by simply tilting the cup and the rotation of the pancharged with the earthy material or the like, will very quickly effectthe complete amalgamation of the binder and earthy material or the like,the product being a dense plastic homogeneous sub stance. When thematerial and binder are thoroughly mixed, 'the operator will manipulatethe shovel or scoop to cause the material in the pan to be deflectedupward and over the rim of the pan at the front side thereof in a mannersimilar to earth passing over a plowshare, the product dropping into thehopper of a disintegrator 53,

'as provided with two crushing rollers 54 and 55, roller 54 beingmounted on a shaft 56 equipped with a belt wheel 57 connected by a belt58 with power transmission pulley 14. The shaft 59 of roller 55 isequipped with a belt wheel 60 connected by a belt 61 with the powertransmission pulley 15. These rollers insure the completepulverization'of any particles of rock or any other hard substance whichmay have escaped pulverization in the pan so that the materialdischarged from the disintegrator shall be dense and plastic. Themixture will likewise possess the desirable quality of adhesiveness sothat it shall not crumble, and the property of being impervious topenetration by frost or water.

As the mixed material possessing the qualities set forth is dischargedfrom the disintegrator, it falls upon a horizontal conveyer 62 mountedat its opposite ends upon shafts 3 suitably journaled in a sub-frame .64underlying and depending from the bed.

It will be understood that the product is never produced while themachine is traveling along a road but that it can be produced at anypoint on or off the road, where the supply of earthy or granulatedmaterial is accessible.

Before beginning the operation of the ma-- chine, .an elevator isattached to it for receiving the material from conveyer 62- andelevating it for discharge upon the groundof a frame or foot secured tothe bed adjacent the outer end of conveyer 62. The shaft of sprocket 67is journaled in arms 69 of standards 70 secured rigidly at their lowerends to the walls 68 of said frame and within the frame is a receptacle71 for receiving the material discharged by conveyer 62, so that thebuckets 66 shall be charged as they successively pass through saidreceptacle. The lower shaftof the con veyer 65 is provided with a bevelgear 72 meshing with a bevel gear 73 on the outer end of a shaft Tlsuitably journaled and equipped with a belt wheel 7 5 connected by adriving belt 76 to the power transmission wheel l6 on countershaft 11.

As the operation of the various parts has been described in detail it isnot deemed necessary to recapitulate the operation. The machine may bemoved from place to place by means of draft animals or by any motivepower. From the above description it will be apparent that I haveproduced a machine or plant for producing a paving mixture which takesthe earthy or granular material in its natural state, either dry ormoist and thoroughly mixes it with a binder of the character described,in a most efficient, uniform, rapid and economical manner, and that themachine in addition to possessing the desirable features of simplicityand compactness, embodies in its construction equipment for performingits various functions which is of standard construction and therefore ofknown practicability, though it is to be un derstood that I do notrestrict myself to the particular kind of pan mixer ordisintegratorillustrated and described, nor to other details ofconstruction which are obviously susceptible of modification within thespirit and scope of the appended claims.

I claim:

1. A machine for preparing road paving material, comprising a; pan,crushing mechanism in the pan, a disintegrator, means for dischargingmixed material from the pan into the disintegrator, means for conveyingmaterial as it is discharged from the disintegrator to an elevated pointof discharge, a motor mounted on the machine, and means for transmittingpower from said motor to operate the crushing mechanism, thedisintegrator and the conveyer means.

A machine for preparing road paving material, comprising a pan, crushingmechanism in the pan, means for determining the quantity of earthy orgranular material to be deposited in the pan, means for receiving abinder and indicating the quantity thereof and for discharging thebinder into the mixer, a motor mounted on the machine and connected tooperate the crushing mechanism and effect the thorough grinding andkneading 0f the earthy or granular material and the mixture therewith ofsuch binder, a disintegrator mounted on the machine, connections betweenthe motor and the disintegrator to operate the latter, and means toeffect the discharge of the mixed material from the pan into thedisintegrator to effect the thorough pulverization of the mixture.

3. A machine for preparing road paving material, comprising a pan,crushing mechanism in the pan, means for determining the quantity ofearthy or granular material to be deposited in the pan, means forreceiving a binder and indicating the quantity thereof and 'fordischarging the binder into the mixer, a motor mounted on the machineand connected to operate the crushing mechanism and effect the thoroughgrinding and kneading of the earthy or granular material and the mixturetherewith of such binder, a disintegrator mounted on the machine,connections between the motor and the disintegrator to operate thelatter, means to effect the discharge of the mixed material from the paninto the disintegrator to effect the thorough pulverization of themixture, a conveyer to receive the pulverized product from thedisintegrator and convey it to the point of discharge at one side of themachine, and means to transmit power from the motor to said conveyer.

4. A machine for preparing road paving material comprising a pan,crushing mechanism in the pan, means for measuring and dumping earthy orgranular 'material into the pan, a receptacle for a binder and forindicating the quantity thereof and for discharging the binder into themixer, means for charging the binder receptacle, a motor mounted on themachine and connected to operate the crushing mechanism and effect thethorough grinding of the earthy or granular material and the mixturetherewith of the binder, a disintegrator mounted on the machine,connections between the motor and the disintegrator to operate thelatter, means to effect the discharge of the mixed material from the paninto the disintegrator to effect the thorough pulverization ofthemixture,

a conveyer to receive the pulverized product from the disintegrator andconvey it to the point of discharge at one side of the machine, andmeans to transmit power from the motor to said conveyer.

for receiving and indicating the quantity of liquid binder and forcharging the pan with such binder, a plurality of disintegratingrollers, means for gathering up the mixed material from the pan andfeeding it into the disintegrating rollers, and means for transmittingpower from the countershaft to the disintegrating rollers.

6. A machine for preparing road paving material, comprising a wheeledframe, a motor mounted thereon, a eountershaft suitably supported fromthe frame, connections for transmitting power from the motor to thecounter-shaft, a pan mounted on the frame, crushing mechanism in thepan, means for transmitting power from the countershaft to operate thecrushing mechanism, means for receiving and indicating the quantity ofearth or granular material and for charging t e pan with such material,means for receiving and indicating the quantity of liquid binder and forcharging the pan with such binder, a plurality of disintegratingrollers, means for gathering up the mixed material from the pan andfeeding it'into the disintegrating rollers, means for transmitting powerfrom the countersh'aft v to the disintegrating rollers, a conveyerunderlying the disintegrating rollers to receive the material therefrom,and means for transmitting power from the counter shaft to saidconveyer.

7.- A machine for preparing road paving material, comprising a wheeledframe, a moto: mounted on said frame, a countershaft suitably journaledand driven by said motor, a vertical shaft, a circular pan carried bysaid shaft, means for transmitting power from the countershaft to saidvertical shaft to rotate the pan', crushing wheels or mullers "dependinginto the pan for crushing and kneading material within the latter underfrictional contact with such material produced by rotation of the pan,scrapers with;

in the pan to deflect the material to a position for effective contactwith said mullers, means for elevating the material from the pan anddischarging it over its wall at the front side thereof, a disintegratormounted on the ,frame to receive the material discharged from the pan,means for transmitting power from the countershaft to the disintegrator,a laterally extending conveyer at one end underlying the disintegratorand adapted to discharge the material received therefrom at one side ofthe machine, an upwardly and outwardly inclined conveyer to receivematerial at its lower end from the discharge end of the first-namedconveyer aud discharge it at its upper end, means to transmit power fromthe countershaft to the inclined conveyer, and means to transmit powerfrom the latter to the first-named conveyer.

8. A machine for preparing paving material, comprising a mixer, avertical frame mounted on the machine, a track carried by said frame, ameasuring device arranged to travel on said track and to charge themixer with a predetermined quantity of earthy or granular material,ameasuring device provided with a cup for discharging a liquid binderinto the mixer, a motor mounted on terial, comprising a mixer, avertical frame mounted on the machine, 'a track carried by said frame, ameasuring device arranged to travel on said track and to charge themixer with a predetermined quantity of earthy or,

granular material, a measuring device provided with a cup fordischarging a binder into the mixer, a motor mounted on the ma-,

chine and connected to operate the mixer and effect the thoroughgrinding of the earthy or granular material and the mixture therewithofthe binder, a disintegrator mounted on the machine, connections betweenthe motor and the disintegrator to operate the latter, means to effectthe automatic discharge of the mixed material from the mixer into thedisintegrator to effect the thorough pulverization of the mixture, aconveyer to receive the pulverized product from the disintegrator andconvey it to the point of discharge at one side of the machine, andmeans to transmit power from the motor to said conveyer.

' 10. A machine for preparing road paving material, comprising a mixer,a vertical frame'mounted on the machine, a track carried by said frame,a weighing or measuring device arranged to travel on said track and tocharge the mixer with a predetermined quantity of earthy or granularmaterial, a weighing scale provided with a cup effect the automaticdischarge of the mixed material from the mixer into the disintegrator toeflect the thorough pulverization of the mixture, a conveyer to receivethe pulverized product from the disintegrator and convey it to the pointof discharge at one side of the machine, and means to transmit powerfrom the motor to said conveyer.

11. A machine for preparing road paving material, comprising a mixer, avertical frame mounted on the machine, a track carried by said frame, astandard detachably secured to the rear end of the track and adapted torest upon the ground, a Weighing scale or measuring device arranged totravel on aid track, and to charge the mixer with predeterminedquantities of earthy or granular material, a Weighing scale providedWith a cup 'for discharging a binder into the mixer, a motor mounted onthe machine and connected to operate the mixer and effect the thoroughgrinding of the earthy or granular material and the mixture therewith ofthe binder, a disintegrator mounted on the machine, connections betweenthe motor and the disintegrator to operate the latter, means to effectthe automatic discharge of the mixed material from the mixer into thedisintegrator to effect the thorough pulverization of the mixture, aconveyer to receive the pulverized product from the disintegrator andconvey it to the point of discharge at one side of the ma- 13. A machinefor preparing paving material, comprising a pan, means Within the panfor cooperating With the same in crushing and kneading material therein,a disintegrator, means to operate the said crushing and kneadingmechanism and the said disintegrator, means to deliver a measuredquantity of earthy material to said pan,

'means to deliver binding material to said pan in quantity proportionedto the quantity of earthy material delivered to said pan, and means toautomatically deliver kneaded material from said pan to saiddisintegrator.

In testimony whereof I afiix my signature in presence of two witnesses.

CALVERT R. HUNT. Witnesses:

D. J. DOWNEY, G. Y. TIIORPE.

